03 / Engineering case study
RF Direction Finder
Directional reception and angular comparison for estimating the bearing of an RF source.
- Engineering domain
- RF localization & instrumentation
- Project status
- Completed
Developed by Mohammed Vashir - Difficulty
- Research Level
Representative imagery — not this 4TECH build.The problem.
Locating a radio source requires more than detecting its presence. Received power varies with antenna orientation, reflections and obstructions, which complicates the interpretation of a bearing.
The engineering approach.
The system combines directional reception with measurements recorded at known orientations. Signal observations are compared across the angular sweep to present an estimated source direction.
The engineering workflow links the antenna, RF receiver, angular reference and visualization. It emphasizes consistent measurement conditions and interpretation of the directional response, rather than treating the strongest sample as an infallible location estimate.
The toolkit.
- Directional antenna
- SDR
- Angular measurement
- Python
- Signal-strength analysis
Engineering contribution.
Supports controlled transmitter-location exercises and investigation of directional antenna response.
Technical scope & validation
Bearing estimates are affected by multipath, antenna pattern and geometry. No angular accuracy or geolocation precision is specified.
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